Flexible or rolling metallic shuttle.



G. L. G. WILSE. XIBLE 0B ROLLING HETALLL' BHUTT'JEB.

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OFFICE.

TAKES G. -ANI) LITEI 0. WILSON, 0F LAICHXONT, NIW YORK.

FLEXIBLE '0l 10X-LING IITLLLIO SHUTTIB.

Patented Feb. 22 1910.

Apptioatim. tiled lay Il, 1008. Berta! lo. 434.530.

To all whom it may concern:

quite frequentli' happens; in such case, by

Be it known that. we, Jani-i tl. Wimox reason of the e ose contact ol the two inter'.

and Li-:s'ritit G. Willson', both rendenta of Larchnioiit, "csteheatcr county. State of New York, have jointly invented a new and useful Iin n'oveinentin Flexible or Rolling Metallic Sl a specification.

'lhis invention relates more particularly to the formation of the hinged joint, connecting adjacent slats. whereby is secured increased etlieiency in working of the hinged connection without undue friction and without. undue noise.

It also relai. to an iiiiprored construction and arrangement of the runways for guidint.' the vertical movement of the hutte-r.

'lhel scope and character ofour invention will he more clearly understmd hy reference to the description and claims and to the itccoinpanying drawings where-- Figure, l is an elevation, from the inside, of a preferred forni of our iin roved slintter showing the. runway partly irokeii away o its to completely disclose one iii-the hws or angle pieces.; but one edge or side of t ie hotter with its eorreapoinliiig runway is shown since thel coiwtruction of the other side and runway is Similar. Fi 2. is a section. looking front the right, a ong the line 2-2 of Fig. l. and ,l"i; 3. is a section. looking front above. along-the line ifi-Hof Fig.

1. Figs. -l and I are vnei-tional rien-.fi of the' hinge portions connecting two aiuta.

'lhe slats u, u. used in our iinprotjed i-lintter belong. speaking broadly, to that claas, well known inythe artulntving a cross :section of niotlitied 8 forni. .in which the slitta are readily nitido to mutually interlock gr hing'e hy giving suitable cnrt'atures to the 'margins of the slani. e., in section, to the extreme poi'- tions of the 8. (lne of the inout common of auch hinge shapingii is that shown in Fig. 4

. inwhich the interlocking menihersof any two ad'aecnt lati-i are exactly alike and, in etl'ect. ornied hy turning over the shit margins into nearly complete cylinders. Such it hinge. having its interactin surfaces in contact t'ottuvai'ly 360 has, o course, a niaximum ol' friction uml tlic shutter is. therefore, moved only with relative ditiiculty. A further characteristic feature of such a hinge i.-i its liability to injury if struck a heavy blow, as e. g., should a heavy case fall against the shutter so as to strike the hin e with one of itz,- corners, an accident. whic i i i inner member and eonseqiitnt partial or iuttcrs, of which the following is complete lo of llexiliility. This in .shown at Le, Fig. 5. Again. in sonic of the earlier furnis of rolling ahntters the. hinge connecvtion is characterized by an edge of Lone shit contacting with and rubbing over a margin of the adincent shit. ."uch connection i.`z objectionable as not being,I water-tight. and also becauseY of the undue chattering noise produced by the seein-win;r of the Slat. edge over the contacting shit. margin when the shutter is' rolled up or down. ln ihia forni of hinge connection. there is not -ntliiient surface contact. to obiiate thc objections mentioned. While numerom: other foi-nis of hinge members have been suggested or used cha raeterist tc they all ossesn the Qanic features w iich have tust been mentioned.

in our inun'ovcd waarin-tion we give the bottoni nient ier f', of one shit, :i vet-y ditercnt shape t'roin the interlocking top member, 1I. of the adjacent Slat. For e, webegin to lturn the slut edge to the .inside on a curve of -relatively long radius. grailiially .shortening this radius a we approach thc edge. of the Slat. For d. we begin to turn the alst edge outwardly on aradins about the saaie as the shortest radius for c, and we maintain this radius practically constant until almost a complete cylinder has boeit formed. When the two shits are slid together, the u per roll d, that the upper margin of t e lower alat. surrounds and is concentric with the Ainner portion of the lower curved margin of the upper "lat, that is, with thefolleaid concentric rolls' being in slidii contact for about 180. Thi surface con act of niarginal surface with marginal surface rovides a connection that is substantially water-tight and one which works smoothly without undue friction and without undue noise due to chattering. which is so cfimmon in rollingr metallic slnittem heretofore in use. l-`urtlierniore, the portion f, or the outer portion of the curved margin of the upper shit, surrounds at a distance and protecte the adjacent. concentric connected margins of both slats from iiii'lematien or other injur which might atiect the hinged joint, an sheds water below and away from the ,hinged connection.

ligt

'l'o prevent tlie shutter being forced out of its runways or grooves by unusual shocks and presnures whether of the wind or other, we attach rigidly to each edge of the shutter angle lugs or pieces, g, having projecting portions, li, lyin in a plane at right angles to the plane of t ie shutter; we also provide s ieciul runways, i', in which to operate the shutter. As Shown. each ruiiwa is nnide up of two L sectioiiml irons tittet together so as to foi-in a U to the inside of which are attached two strips, j. j, at a distance apart less than the transverse linear dimensions of a pair of lugs, li, li. These lugs constitute in-turiied lips. The two L sections are sccnred together and to angle irons I b v suitahle int-ans, such as the bolts m. and the'aiigie irons l are suitably secured to the surrounding easing or wall on the outside, as shown. Tho shutter non' makes what is practically ii. loose T joint at each edge with the corres iding runway o that, while Ii'fectly' ree to iiiove up and down, any literal iiioveineiit is resisted and prevented b v the lu It. 'lhese restraining lugs inav be placedan 'where along either or both edges of the s unter and in such numbers na niav seciii most t Ieirable in ii given case; and the may be formed in ways quite different rom that 'ust described, as e. r., in the shape of u cylindrical bolt, slottet axially so as to siip over the shutter edge and provided at its outer end with a disk or other lat aiproxiinateiy at right angles to its axis, an of size sii'icient to engage the runway.

Having now described our improvement we claim:

In a rolling metallic shutter, a lurality of slats having interlocking,` hingedconneetions along their adacent marginsz said interlocking margins icing formed into coiicentric rolls which have a substantial )orl tion of their marginal surfaces in sliding i contact, the lower iiiargin of the upper slut heilig curved to the rear on a decreasing t radius, and the u per margin of the lower l slat. being cui-ved orward on substantially n leonstant radius, the inner portion of thtl curved margin of the upper shit being suri rounded, b v the curved iiiaigin of the lower Isla! and the outer portion of the curved l nia'rgin of the upper shit surrounding at a distance and protecting the adjacent oon tai-ting. concentric margins of both shits. ln testimony whereof we have lierennto l sei' our hands in the presence of two sub- !scribing witness?, this 20th day of May J AS. G. WILSON. LESTER G. VIL-QON. Witnesses:

W. E. Duxcaxsox, Fam Zittern, Jr. 

